Improved sash-balance



N several views.

*y anni antw para einen'.

r. A. WiELsON, 0E oAMDEN, NEW JERSEY, AssIGNoE -To HIMsEL-E, MATTHEW WHILE- i Dm, AND ALBERT A'rWoon-orI SAME nLAoE.

` Lettmlatm No.' 89,821, dans Eta/ 4, 1869.

mueven sneu-Summe.

The Schedule referred to in these Letters Patent and making pait Of the same.

Tot'all whom 'it ma/y concern 'Be it known that I, .1. A. WILLSON, of Camden, New Jersey, have inventedcertain Improvements in Window-Eramcs and Sashes, and attachments for -the same; and I do hereby declare the following to be a full, clear, and exact description of the same.

My invention consists of an economicalarrangement of cords and friction-pulleys,` fully described hereafter, by which windowsashes may be as eifectually balanced as bythe ordinary weighted cords, without the neces,- sity of boxingthe windowframes for the reception of the weights. i

In orderto enable others skilled in theart toV make and apply my invention, I will now proceed todescribe its construction and operation, reference beinghad to the accompanying drawing, which forms a part of this speciiication, and in which@` Y `Iiigure l is a front view,partly in section, 4of a win- A dow-frame with my improvement;

` Figure2, a sectional view of the same,- on the 'line 1.-2, iig. 1, 1ooking in the direction of the arrow;

' Figure 3, a view of a portion of fig..1, with the front sash raised to its full 4extent; and l Figure 4, a sectionalplan view of the frame, on the ent positions. v

Similar letters refer to similar'parts throughout the line 3-4, iig. 1, showingthe sashes adjusted to differ- A represents a portion of a window-frame, in which are the'usual vertical ways a and a', for the reception of the edges of the front and back 'sashes B and 'B'.

y The objection'to the usual arrangement of cordsr and balancing-weights, for maintaining the sashes in any position to which they may be raised or lowered, is the expense incurred in boxing the window-frames .for the Areception of the weights, and to overcome this objection I employ a combination oflcords and frictionpulleys, arranged as I will now proceed to describe.

The edges of each of the sashes, near tdkthe upper ends of the same, are recessed for the reception of a metal-:c`ase`, 11, and in each of the latter there are in the. present instance four grooved `pulleys D D' D'l D?, the two former of which are placed side .by side, and

arranged to turn upon thev same spindle, while the pulley D2 has duplicate grooves, as best observed in iig, 2. i 'A cord, F,*is secured to the top of the windowframe, within each of the ways a and a', from which it passes downwards through a groove, c, formed on the edge of the sash; thence around the' friction-pulleys D D DDa, as seen in yfigs. 1 and 2, and through the remainder of the groove c, to about the point x,

`where the opposite endof the cord is permanently secured to the window-frame by a screw or other fast-- ening.

leys D, will not interfere withthefree motion yof the sashes, the friction caused between the said cords and The cords,- when thus secured at; bothends tothe` window-trame,and arranged to pass around the pul` Should it bey found, however, that from the slack-V euing of the cords, or other causes, the sashes are not properly balanced, the friction yupon the pulleys can be readily increased to the lrequired degree by tightening the cords by means of the setscrews j; whichfasten' their upper ends to the windowfframes, and I prefer that the'set-screws should'be provided with swivel-rings, asjseen at f,fig. 1, so that the cords vmay not become twisted while being tightened.

For the purpose of fastening'the sashes when closed,

or'when opened to a slight extent for the admission` of air, 8vo., I' employ the lock shown in the drawing,

which consists of a metal case, H, secured within a recess of the window-frame, and having a bolt, h,

which is arranged toslide diagonally between groovesI it, in "such a manner that, when its notched end projects from the said case, it shall pass beneath the sash, as'shown in iig. 3, or enter one of the .notches j formed'on the edge of the same. n

The bolt'h of the lock is operated by a weight, k, and by an arm, l, whose spindle is turned from the insideA of the window i, g.A.

-The weightk hasa diagonal arm, which is 'arranged -to .slide through a recess on the bolt, so that when the weight falls, the bolt will be thrust forward, and

when the weight is raised by means of the arm l, the bolt shallin like manner be drawn back; all of which will 'be readily understood on reference vto figs. 1 and 3.

Although, on the score of economy, my arrangement of cords and friction-pulleys is to be preferred to the ordinary Weightedcords for new vwindows, it is especially applicable to old window-frames, which cannot be readily adapted for the reception of weights.

I am aware that single and double pulleys have been arranged in a frame for the reception of a cord on a sash; but this arrangement is difficult to apply i to old frames and sashes.

I am also aware that a cord has been arranged upon a single pulley, in a manner similar to mine, the puling the sash in position. i 4The last-described method is objectionable, as the cord is abraded, a resultwhich is not produced by the use of several pulleys, on which the cord is arrangedl as described in my improvement.

What I claim as my invention, and desire'to secure A by Letters Patent, 1

A cord, E, secured at opposite ends to the frame of a window,and arranged upon a series of pulleys, D Dl D', as described, when the said pulleys-rotate in a .recess in the sash, and are s o adjustedas to prevent the cord from being forced against the frame, as set forth. l

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses. e

p P. A. WILLSDN.

'Witnesses A i ELE. BAILEY,

Q. B. Pmon. 

